Lying down adrenal sign

Last revised by Mostafa Elfeky on 28 May 2024

Citation, DOI, disclosures and article data

Citation:

Venkatesh M, Elfeky M, Lee S, et al. Lying down adrenal sign. Reference article, Radiopaedia.org (Accessed on 14 Jun 2024) https://doi.org/10.53347/rID-25432

DOI:

https://doi.org/10.53347/rID-25432

Permalink:

https://radiopaedia.org/articles/25432

rID:

25432

Article created:

25 Oct 2013, Manchikanti Venkatesh

Disclosures:

At the time the article was created Manchikanti Venkatesh had no recorded disclosures.

View Manchikanti Venkatesh's current disclosures

Last revised:

28 May 2024, Mostafa Elfeky ◉

Disclosures:

At the time the article was last revised Mostafa Elfeky had no financial relationships to ineligible companies to disclose.

View Mostafa Elfeky's current disclosures

Revisions:

15 times, by 14 contributors - see full revision history and disclosures

Systems:

Urogenital

Sections:

Anatomy, Signs

Tags:

stub, refs

Synonyms:

Flat adrenal sign
Pancake adrenal
Pancake adrenal gland
Pancake adrenal sign
Flattened adrenal sign
Discoid adrenal
Straight adrenal

The lying down adrenal sign is a cross-sectional imaging sign of renal agenesis or ectopia in which the ipsilateral adrenal gland appears to be 'lying down' on the psoas muscle posteriorly. Due to the linear as opposed to Y-shaped configuration of the gland in such situations, it is also described as the discoid ¹, straight ², elongated ², or pancake adrenal gland ^3,4.

It can be a useful sign to confirm renal agenesis when the kidney is not visualised during antenatal ultrasound ^5,6, as well as during postnatal imaging of patients to distinguish from post-nephrectomy state.

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